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11 questions
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  • Q1
    Checkpoints occur between the stages of the cell cycle. If a cell does not meet certain criteria at the end of a stage, it will not move to the next stage. Which of these occurs just before the cell enters the G2 stage of the cell cycle?
    The nuclear membrane disintegrates Centrioles form. The nucleolus divides
    DNA replicates.
    30s
    BIOL.5a
  • Q2
    Meiosis produces 4 genetically different haploid cells. Mitosis produces
    2 genetically identical diploid cells.
    4 genetically different haploid cells.
    2 genetically different diploid cells.
    4 genetically identical haploid cells.
    30s
    BIOL.5a
  • Q3
    A photo-micrograph of onion root tip cells during mitosis is shown below. Which phase of mitosis is occurring in the cell indicated by the arrow?
    Question Image
    Prophase
    Anaphase
    Metaphase
    Telophase
    30s
    BIOL.5a
  • Q4
    Which of these must occur during S phase of the cell cycle so that two daughter cells can be produced during M phase?
    The chromosomes must be joined.
    The cell membrane must be expanded.
    The DNA must be replicated.
    The cytoplasm must be separated.
    30s
    BIOL.5a
  • Q5
    The diagram shown represents the cell cycle. When cells leave the cell cycle, they exit during G1 phase and then enter G0 phase, a resting period. Most normal cells can leave G0 phase and reenter the cell cycle at G1 phase before entering S phase. Cancer cells are different because they cannot enter G0 phase and are likely to do which of the following?
    Question Image
    Repeat the cell cycle continuously
    Die after completing mitosis
    Fail to complete S phase
    Mutate during G1 phase
    30s
    BIOL.5a
  • Q6
    Telophase is a stage of a cellular process that begins after the chromosomes have moved to opposite poles of the cell. During which cellular process does telophase occur?
    Transcription
    Translation
    Mitosis
    Interphase
    30s
    BIOL.5a
  • Q7
    The model represents the change in the DNA content of a cell during the cell cycle Which part of the model represents the S phase?
    Question Image
    I
    III
    IV
    II
    30s
    BIOL.5a
  • Q8
    Scientists can bioengineer skin in a laboratory to treat severe burns and other types of skin injuries. This bioengineered tissue is grown from living cells. The cellular process that enables the cells to grow and develop into tissue is —
    mitosis
    conjugation
    budding
    meiosis
    30s
    BIOL.5a
  • Q9
    The 1918 influenza epidemic killed between 50 million and 100 million people worldwide. This epidemic happened near the end of World War I. More people died from the influenza epidemic than were killed in the war. Which of the following explains why this virus was so deadly worldwide?
    Infected soldiers returning from the war spread the virus when they coughed.
    Medical personnel often became ill as a result of exposure to airborne virus particles.
    All of the above
    Food was scarce because of the war, so people were undernourished, and their immune systems were weakened.
    30s
    BIOL.5a
  • Q10
    As a fertilized egg divides, the cells differentiate because they —
    contain a lipid bilayer
    can clump together
    metabolize sugars rapidly
    have specific genes activated
    30s
    BIOL.5a
  • Q11
    The diagram shows cells in different phases of mitosis. A student is trying to find a cell in a particular phase of mitosis. The student is looking for evidence that spindle fibers are separating the chromosomes to ensure that each new nucleus has one copy of each chromosome. Which cell is in the phase of mitosis that the student is searching for?
    Question Image
    2
    3
    4
    1
    30s
    BIOL.5a

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